A graph of y=f(x) is shown, where f(x)=2x^5-3x^4+x^3-8x^2+5x+3 and f(-x)= -2x^5-3x^4-x^3-8x^2-5x+3. a.  How many negative real zeros does f have?  Explain.   b.  How many positive real zeros are possible for f?  Explain.  What does this tell you about the eventual right-hand behavior of the graph?   c.  Is x= -1/3 a possible rational zero of f?  Explain.   d. Explain how to check whether (x - 3/2) is a factor of f and whether x=3/2 is an upper bound for the real zeros of f.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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A graph of y=f(x) is shown, where f(x)=2x^5-3x^4+x^3-8x^2+5x+3 and f(-x)= -2x^5-3x^4-x^3-8x^2-5x+3.

a.  How many negative real zeros does f have?  Explain.

 

b.  How many positive real zeros are possible for f?  Explain.  What does this tell you about the eventual right-hand behavior of the graph?

 

c.  Is x= -1/3 a possible rational zero of f?  Explain.

 

d. Explain how to check whether (x - 3/2) is a factor of f and whether x=3/2 is an upper bound for the real zeros of f.

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-1.5
1.5
Transcribed Image Text:5 -1.5 1.5
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